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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.text;
/**
* String with Utf8 backing.
* @author baldersheim
* @since 5.2
*/
public final class Utf8String extends Utf8Array implements CharSequence
{
private final String s;
/**
* This will construct a utf8 backing of the given string.
* @param str The string that will be utf8 encoded
*/
public Utf8String(String str) {
super(Utf8.toBytes(str));
s = str;
}
/**
* This will create a string based on the utf8 sequence.
* @param utf8 The backing array
*/
public Utf8String(AbstractUtf8Array utf8) {
super(utf8.getBytes(), utf8.getByteOffset(), utf8.getByteLength());
s = utf8.toString();
}
@Override
public char charAt(int index) {
return toString().charAt(index);
}
@Override
public int length() {
return toString().length();
}
@Override
public CharSequence subSequence(int start, int end) {
return toString().subSequence(start, end);
}
@Override
public boolean equals(Object o) {
if (o instanceof Utf8String) {
return s.equals(o.toString());
}
return super.equals(o);
}
@Override
public String toString() {
return s;
}
}
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